He who in faith offers supplication to God for the necessities of this life is heard mercifully, and not heard mercifully. For the physician knows better than the sick man what is good for his sickness. But if he asks that which God both promises and commands, his prayer shall be granted, for love shall receive what truth provides.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Prosper, Sent. 212